1211010022001 has 16 divisors (see below), whose sum is σ = 1374043070400. Its totient is φ = 1058065737408.

The previous prime is 1211010021983. The next prime is 1211010022009. The reversal of 1211010022001 is 1002200101121.

It is a cyclic number.

It is not a de Polignac number, because 1211010022001 - 2¹⁰ = 1211010020977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211010022009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1936571 + ... + 2484416.

It is an arithmetic number, because the mean of its divisors is an integer number (85877691900).

Almost surely, 2^{1211010022001} is an apocalyptic number.

It is an amenable number.

1211010022001 is a deficient number, since it is larger than the sum of its proper divisors (163033048399).

1211010022001 is a wasteful number, since it uses less digits than its factorization.

1211010022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422128.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1211010022001 its reverse (1002200101121), we get a palindrome (2213210123122).

The spelling of 1211010022001 in words is "one trillion, two hundred eleven billion, ten million, twenty-two thousand, one".